A wireless energy transfer system may include a first layer of conductive material that may be positioned proximate to a second layer. The second layer of magnetic material may be positioned proximate to the first layer of conductive material and a third layer. The third layer may be positioned proximate to the second layer and a fourth layer, wherein the third layer may include a first resonator coil, wherein the first resonator coil may be configured to transfer wireless energy to a second resonator coil when the second resonator coil is proximate to the first resonator coil. The fourth layer may be positioned proximate to the third layer, wherein the fourth layer may include a plurality of conductive material.
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1. A wireless energy transfer system comprising: a first layer of conductive material positioned proximate to a second layer; the second layer of magnetic material positioned proximate to the first layer of conductive material and a third layer; the third layer positioned proximate to the second layer and a fourth layer, the third layer includes a first resonator coil, wherein the first resonator coil is configured to transfer wireless energy to a second resonator coil when the second resonator coil is proximate to the first resonator coil; and the fourth layer positioned proximate to the third layer, wherein the fourth layer includes a plurality of conductive material.
A wireless power transfer system includes four layers stacked together. The first layer is made of a conductive material. The second layer, made of magnetic material (like ferrite), is placed next to the first conductive layer. The third layer sits next to the second magnetic layer and contains a resonator coil made of copper traces. This coil wirelessly transmits power to another resonator coil when they are close to each other. The fourth layer, positioned next to the third layer, contains multiple conductive pieces arranged to optimize power transfer.
2. The system of claim 1 wherein at least one of a size, a shape, and a geometric position of the plurality of pieces of conductive material reduces inductance shifting in the second resonator coil when the first resonator coil is proximate to the second resonator coil.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer), the size, shape, and position of the conductive pieces in the fourth layer are designed to minimize unwanted changes in the inductance of the receiving resonator coil when it's near the transmitting coil. This helps maintain efficient power transfer.
3. The system of claim 2 wherein the shape is a rectangle.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the size, shape, and position of conductive pieces reduce inductance shifting, the shape of the conductive pieces in the fourth layer is a rectangle.
4. The system of claim 2 wherein the shape is a square.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the size, shape, and position of conductive pieces reduce inductance shifting, the shape of the conductive pieces in the fourth layer is a square.
5. The system of claim 2 wherein at least a first portion of the plurality of pieces of the conductive material is a first shape, and wherein at least a second portion of the plurality of pieces of the conductive material is a second shape.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the size, shape, and position of conductive pieces reduce inductance shifting, some of the conductive pieces in the fourth layer have one shape, and other conductive pieces have a different shape.
6. The system of claim 2 wherein at least a portion of the plurality of pieces of the conductive material are arranged in a checkered pattern relative to the first resonator coil.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the size, shape, and position of conductive pieces reduce inductance shifting, the conductive pieces in the fourth layer are arranged in a checkerboard pattern relative to the transmitting resonator coil.
7. The system of claim 1 wherein the first resonator coil includes copper trace.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the third layer contains a resonator coil, the resonator coil is made of copper traces.
8. The system of claim 1 wherein the magnetic material includes ferrite.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the second layer is made of a magnetic material, the magnetic material is ferrite.
9. The system of claim 1 wherein the plurality of pieces of conductive material of the fourth layer includes copper.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the fourth layer contains multiple conductive pieces, these pieces are made of copper.
10. The system of claim 1 wherein the first layer of conductive material includes copper.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the first layer is made of a conductive material, the first layer is made of copper.
11. The system of claim 1 wherein the first layer is configured to be coupled to a surface of a mobile battery unit.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the first layer is made of a conductive material, this first layer is designed to attach to the surface of a mobile device's battery.
12. The system of claim 1 wherein the magnetic material has a thickness less than 1 mm.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the second layer is made of a magnetic material, the magnetic material is less than 1 mm thick.
13. The system of claim 1 wherein the magnetic material has a thickness less than 0.5 mm.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the second layer is made of a magnetic material, the magnetic material is less than 0.5 mm thick.
14. The system of claim 1 wherein the first resonator coil is configured to transfer at least 5 W of energy to the second resonator coil.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the third layer includes a first resonator coil configured to transfer wireless energy to a second resonator coil, the resonator coil can transmit at least 5 Watts of power.
15. The system of claim 1 wherein the first resonator coil is configured to transfer at least 10 W of energy to the second resonator coil.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a resonator coil layer, and a conductive pieces layer) where the third layer includes a first resonator coil configured to transfer wireless energy to a second resonator coil, the resonator coil can transmit at least 10 Watts of power.
16. A wireless energy transfer system comprising: a first layer of conductive material positioned proximate to the second layer; the second layer of magnetic material positioned proximate to the first layer of conductive material and a third layer; the third layer positioned proximate to the second layer and a fourth layer, wherein the third layer includes a plurality of pieces of conductive material; and the fourth layer positioned proximate to the third layer, the fourth layer includes a first resonator coil, wherein the first resonator coil is configured to transfer wireless energy to a second resonator coil when the second resonator coil is proximate to the first resonator coil.
A wireless power transfer system includes four layers stacked together. The first layer is made of a conductive material. The second layer, made of magnetic material (like ferrite), is placed next to the first conductive layer. The third layer sits next to the second magnetic layer and contains multiple conductive pieces arranged to optimize power transfer. The fourth layer, positioned next to the third layer, contains a resonator coil made of copper traces. This coil wirelessly transmits power to another resonator coil when they are close to each other.
17. The system of claim 16 wherein at least one of a size, a shape, and a geometric position of the plurality of pieces of conductive material reduces inductance shifting in the second resonator when the first resonator is proximate to the second resonator.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a conductive pieces layer, and a resonator coil layer), the size, shape, and position of the conductive pieces in the third layer are designed to minimize unwanted changes in the inductance of the receiving resonator coil when it's near the transmitting coil. This helps maintain efficient power transfer.
18. The system of claim 17 wherein at least a first portion of the plurality of pieces of the conductive material is a first shape, and wherein at least a second portion of the plurality of pieces of the conductive material is a second shape.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a conductive pieces layer, and a resonator coil layer) where the size, shape, and position of conductive pieces reduce inductance shifting, some of the conductive pieces in the third layer have one shape, and other conductive pieces have a different shape.
19. The system of claim 17 wherein at least a portion of the plurality of pieces of the conductive material are arranged in a checkered pattern relative to the first resonator.
In the wireless power transfer system described as comprising four layers (a conductive layer, a magnetic layer, a conductive pieces layer, and a resonator coil layer) where the size, shape, and position of conductive pieces reduce inductance shifting, the conductive pieces in the third layer are arranged in a checkerboard pattern relative to the transmitting resonator coil.
20. The system of claim 16 wherein the plurality of pieces of conductive material of the fourth layer includes copper.
In the wireless power transfer system comprising four layers (a conductive layer, a magnetic layer, a conductive pieces layer, and a resonator coil layer) where the third layer contains multiple conductive pieces, these pieces are made of copper.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
April 16, 2015
August 15, 2017
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